Cylinder Head - Installation

INSTALLATION - CYLINDER HEAD

1. Clean all sealing surfaces of engine block and cylinder heads.
2. Position new gasket(s) on engine block (Figure 1). The left bank gasket is identified with the "L" stamped in the exposed area of the gasket located at front of engine (shown in (Figure 1)). The right bank gasket is identified with a "R" stamped in the exposed area of the gasket also, but is located at the rear of the engine.




Figure 1 Head Gasket Installation





3. The cylinder head bolts are torqued using the torque yield method, they should be examined BEFORE reuse. If the threads are necked down, the bolts must be replaced (Figure 2).
4. Necking can be checked by holding a scale or straight edge against the threads. If all the threads do not contact the scale the bolt should be replaced.




Figure 2 Checking Bolts for Stretching (Necking)





5. Tighten the cylinder head bolts 1-8 in the sequence shown in (Figure 3). Using the 4 step torque turn method, tighten according to the following values:
- Step 1: Bolts 1 - 8 to 61 Nm (45 ft. lbs.)
- Step 2: Bolts 1 - 8 to 88 Nm (65 ft. lbs.)
- Step 3: Bolts 1 - 8 (again) to 88 Nm (65 ft. lbs.)
- Step 4: Bolts 1 - 8 turn an additional 1/4 Turn. (Do not use a torque wrench for this step.)

NOTE: Bolt torque after 1/4 turn should be over 122 Nm (90 ft. lbs.). If not, replace the bolt.




Figure 3 CYLINDER HEAD TIGHTENING SEQUENCE

6. Inspect push rods and replace worn or bent rods.
7. Install the push rods.
8. Install the rocker arm and shaft assemblies.
9. Install the cylinder head covers.
10. Install the exhaust manifolds.
11. Install new O-ring on dipstick tube. Install dipstick tube assembly (Figure 4).
12. Install the spark plugs.
13. Install upper and lower intake manifolds.
14. Fill the cooling system.
15. Connect negative cable to battery.





Figure 4 DIPSTICK & TUBE